i just purchased a 240d with a 4 speed manual trany. what kind of oil should the transmission have in it? the car didnt come with the books.

btw: the po put a 5cyl na engine in it. is this a common conversion?

thanks for the help.

JimSmith uses Redline ... if you do a seach you can find out which exact designation...
LOL.. this ought to limit the number of suggestions that hit this thread....

The book calls for ATF. Some people say that modern Dexron III ATF is bad for the seals. Some people use Type A ATF, Some use Mobil 1 10w30, Some use Redline MTL. Like Greg says, do a search and just read up on it.

Whatever you do, don't put gear oil in it.

I'm using the Redline MTL in mine.

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Palangi

2004 C240 Wagon 203.261 Baby Benz
2008 ML320 CDI Highway Cruiser
2006 Toyota Prius, Saving the Planet @ 48 mpg
2000 F-150, Destroying the Planet @ 20 mpg



TRUMP .......... WHITEHOUSE
HILLARY .........JAILHOUSE
BERNIE .......... NUTHOUSE
0BAMA .......... OUTHOUSE

I just put Mobil Synthetic ATF in the 5 spd in my 409d. I read a post somewhere on this board of someone else using it.

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1977 300d 70k--sold 08
1985 300TD 185k+
1984 307d 126k--sold 8/03
1985 409d 65k--sold 06
1984 300SD 315k--daughter's car
1979 300SD 122k--sold 2/11
1999 Fuso FG Expedition Camper
1993 GMC Sierra 6.5 TD 4x4
1982 Bluebird Wanderlodge CAT 3208--Sold 2/13

Yeah, mobil1 atf will eventually eat the seals, i have type A in mine now, and am going to order some redline mtl from autoil.com, its the regular MTL not MTL 90.

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83 240D four bagger stick diesel 276K

I don't think that is a ' common' conversion.... but I think it would be a nice one... that leaves you a lot more space in the engine compartment on the passenger side ( than the turbo 5 speed)..... but should be safer integrating with traffic.

Been using Mobil-I ATF since 91 on my 240D 4speed and now on my 5speed Gurkha with great results. The first thing that was noticeable was the smoohtness, especially in cold tranny as well as the level of noise going down. On my 5speed, i can shift with my fingers effortlessly and I have driven in 50c and -10c and the shifting never detiorated. Never had any problems with my seals either.

I thoroughly recommend Mobil-I ATF.

My stick 240 is perfectly happy doin 80

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83 240D four bagger stick diesel 276K

what engine is in ur 240 now?

the car has the non turbo 617 engine. it seems to run great. i am not sure what gears are in the rear end. i think it has the stock 240 gears. i need to find out, since there is to tach and i would hate to overspeed the engine. i also need to verify if the speedodometer is correctly set, or if that is even an issue.

it seems to be just as quick as my 85 300sd auto. i suppose that is becase i can wind it up more with the stick. sure is diffucult to float the gears on this one.

Actually, I believe that the gear ratio on turbo 123's from '82-'84 was 3.07. I know my '85 has taller gears...2.8 something, I believe...